Here are some pictures of what I've setup on a garage door. I am using a Rosslare AY-S55 Weigand keypad that interfaces with the Weigand port of one of my Elk keypads. This Rosslare unit is piezo electric--zero moving parts. The output of the interior mating Elk keypad controls a relay that actuates the garage door opener (a rule is setup in ElkRP to activate the garage door opener with authenticated keypad access if between the hours of 7A and 9P). I like that all of the authentication is done in the Elk M1. The exterior keypad is just a "dumb" data entry device. Finally, I have a sensor on the garage door so that I can be alerted when the door is open, but I've installed the garage door sensor in a slightly unconventional fashion that keeps it out of site. The sensor magnet mounts to the top edge of the door. Have a look:
P.S. If you are mounting the Rosslare keypad, don't use the included screws. They are junk, and the heads twist off with the least amount of torque.
P.S. If you are mounting the Rosslare keypad, don't use the included screws. They are junk, and the heads twist off with the least amount of torque.